Thanks for these, Jolan. Great clues as always.
Here is my stab at them-
1. Human being with a supernatural power associated with people and things (4)- MANA? (man- human being, with a – mana in Chambers as a supernatural power )
2. Authorized short run? (3,2)- LEG IT? (Legit means “authorised” and Leg it is a short way of saying “run”)
3. Subdue first then corner an American underground construction worker (7)- SANDHOG? (S is first letter of subdue, then- and, + hog -corner as in “corner the market” gives sandhog - an American underground construction worker)
4. Force 10 (perhaps) on board? (5,4)- PRESS GANG? (To force ten (or another number, thus “perhaps”) onto a ship –“on board” is to press gang)
5. Sales talk about gear-changes at home trial for food processor (5,9) LARGE INTESTINE? (Sales talk- line about gear, "with changes" arge, with at home- in and trial – test gives L arge in test ine)
Thanks again,
See you in September.
AB